math-differential equationshi i need to know how to do this one thanks Find the solution to yx + x + (dy/dx) = 0 ; y(9) = -9 y = ???? Does this separate the variables? dy/dx=-x(y+1) dy/(y+1) = -x dx
August 5, 2007

mathuse the quadratic formula to solve this equation. 4x^2-8x+3=5 use the formula x=-b + or - the sqrt of b^2-4ac/2a yes, the 2a divides into all. Memorize it.
July 12, 2007

mathx^2-9x-4=6 solve by completing the square show steps plz :D Add 4 to both sides. What is 1/2 of -9? Then square that, and add it to both sides. Now, on the left, you have a perfect square.. (x-9/2). Take the square root of each side. Remember the right side will be +-.
July 12, 2007

health and human services Give an example of how each of the following management structures affects the day-to-day work of an organization. 1. Departmentalization 2. Matrix Organizations 3. The Project Team 4. The Collegial Model Since this is not my area of expertise, I searched Google under ...
July 9, 2007

literatureHow do poets utilize literary devices and conventions to develop themes in their poetry? Good explanation here: "Language is a means of communication by symbolic sounds and graphics. The meaning of these symbols is affected by the use of literary devices which further ...
July 3, 2007

ALGEBRAlist all like terms 6x, -7x^2, 4w^2x, 8wx^2, -9w^2 Three are no like terms in this set.
July 2, 2007

Social StudiesDid the West Indies help the Spanish conquistadors? "The analogous "West Indies" originates from Christopher Columbus' idea that he had landed in the Indies (then meaning all of south and east Asia) when he had actually reached the Americas." from http...
May 25, 2007

EconomicsDescribe the effects of protective tariffs. Why might a government limit free trade in this way? I know that a protective tariff is designed to protect a domestic industry but i can't figure out the rest of the question. Governments impose tariffs on imported goods so that...
May 15, 2007

Social StudiesI'm making this desert island project where you have no hope of getting rescued and you are with 149 other people. you must make your own currency, government, etc. with whatever. i don't know how to make my won government. what the? teachers are confusing... by won i ...
May 14, 2007

vocab-true or falseTrue or False: 1. A subway breakdown at rush hour can rejuvenate hundreds of commuters 2. In the 19th century, workers were sometimes exploited by their employers. 3. Heavyweight boxers do not inflict any pain or injury on one another. go to keyword: dictionary to look up the ...
May 5, 2007

mathhow do you change the fraction 8/35 to a percent? please try to help. thanks You would put 8 divided by 35 into your calculator, and you get 0.22.......... Next, you would move the decimal two places to the right and round to the nearest tenth- about 22.9% p.s - your teacher ...
April 23, 2007

algebra_5x__ + _20__ x+4 4+x change the second denominator ot x+4 Now, they have the same denominators.. (5)(x+4)/(x+4) or 5 check this.
April 22, 2007

Pre-AlgebraI don't understand this equation: Given f(x)=4(x)+1 find the value. f(3) It's fairly basic, you just plug 3 in for x, so it would be 4(3)+1 and then you'd just simplify it :)
April 19, 2007

economicshow can a loan for school tuition affect the money supply? how can it affect aggregate demand? A loan, taken out of some cash reserve, would increase the money supply. The amount of the increase would be determined by the money-multiplier. The increase in spending (in this ...
April 10, 2007

economicswhat would a horizontal aggregate supply curve imply about producer behavior? What would a vertical AS curve?
April 3, 2007

economicsTrue or False 1.Total output may continue to rise even though the marginal physical product (MPP) is decreasing Think about it, then take a shot. Hint: while MPP is decreasing, can it sign still be positive?
March 25, 2007

economicscould we ever achieve an unemployment rate below full employment? What problems might we encounter if it did? I'm not sure if I understand your question. To my knowledge, we can never achieve full employment in the United States. It is always "an unemployment rate ...
March 20, 2007

economicssuppose we established a $10,000 fine for water pollution. Would some companies still find that polluting was economical? Under what conditions? If the cost of correcting the cause of the water pollution were more than $10,000, then a company might believe it was saving money ...
March 13, 2007

economicsWhat are 5 deteminants of demand for JONES Soda Co? What are 4 determinants of supply for JONES Soda Co? Think about what influences supply and demand e.g., what are some factors that would shift the supply curve? the demand curve? And this will be your answer.
March 11, 2007

algebrasimplify the expression. Use only positive exponents. 8x^2y^-2/x^-2y * (4xy^2)^-1/x^2y Something does not seem right in your terms. Are you saying that 8x is being taken to the 2y power and that all this being taken to the -2x power? Please clarify your terms, and we will do ...
March 7, 2007

mummificationBesides human beings, what did the Egyptians embalm? Thank you for using the Jiskha Homework Help Forum. Often pets were also mummified to put in the pyramids with their owners. Here is a site to help you: http://www.woodlands-junior.kent.sch.uk/homework/egypt/mummies.htm
March 5, 2007

MathI have to make up a story problem that divides 4/5 by 2/5 .... I'm having a hard time creating a problem think of having group of friends and food. that one is very common. John used up 4/5 of his gas tank getting 2/5 of the way to his destination. How many tankfuls does ...
February 27, 2007

EconomicsSuppose George is makeing $18 an hour installing electronic chips in handheld computers. Would your offer to work for $8 an hour get you the job? Why might a profit-maximizing employer turn down your offer? This is a bit of an open ended question. My offer to undercut george ...
February 26, 2007

phone charges projectOkay I need to know something about cell phones and land lines. My parents can't answer this because we don't have a land line anymore. We just have cells phones. Okay my question is if someone with a cell phone calls a land line person long distance will that land ...
February 23, 2007

american historywhy did the south industrilize more slowly than the north? The south had fertile farmland that produced abundant crops. It also had slaves to work this land.
February 12, 2007

?????How do you convert miles per minute into minutes per miles?? Help me please! invert. 30miles/min convets to 1min/30miles
February 9, 2007

EconomicsWhy do people routinely stuff themselves at all-you-can-eat buffets? Explain in terms of both utility and demand theories. At any level, the marginal cost of take another bite at an all-you-can-eat place is zero. In terms of utility, a person should therefore consume until the...
February 4, 2007

math/What is a interval in math terms?doe sanyone know what a interval is in math terms? i need the real definition and it is hard and i can not find it anywhere? can anyone help me? thanks,you rule Kayla an interval is "a mathmatical expression of 'betweeness' a---------b or a<x<b this can also...
January 30, 2007

EconomicsI received an answer that helped me understand possibilities curves a little better, but when you have 12 numbers how do you make a curve using only the letters A-F?
January 23, 2007

EconomicsI received an answer that helped me understand possibilities curves a little better, but when you have 12 numbers how do you make a curve using only the letters A-F?
January 22, 2007

EconomicsI don't understand possibilities curves at all. I have to convert a table into a curve using labels A-F. I have no clue how to figure it out. Help would be greatly appreciated! The x-axis and the y-axis should be Good A and Good B (they should give this to you), and plot ...
January 22, 2007

Pre Cal6-x=2x+9 If you are to solve the equation for x, first try to get the variable on one side of the equation. Let's subtract 2x from both sides to start (whatever operation you do to one side of an equation you must do to the other side as well): 6 - x - 2x = 2x - 2x + 9 6...
January 15, 2007

disciplineWhen Pat talks during math instruction, Mrs. Miller puts Pat's name on the board. If Pat interrupts the lesson again, she will receive a check by her name and lose five minutes of recess. What type of discipline is this called? Is it assertive discipline? Yes. It is ...
January 14, 2007

GOVERNMENTDo you think the majority in Dickerson VS. The United States engaged n judicial activism? Why or why not? Can someone help me understand the difference between judicial activism and judicial restraint? Also I need to find a little more info on this case to help me write this ...
January 8, 2007

MathWrite a brief answer to each question. Provide examples. a) When is the sum or difference of two monomials a monomial? b) When is the product of two monomials a monomial? c) When is the quotient of two monomials a monomials? Plz help, the questions confuse me. I have no clue ...
December 20, 2006

please help its bedtimehow can you tell which form of a rational number is most appropriate in a given situation? Use an integer, or fraction, NEVER a decimal number. If your number is say 3.5, then the rational answer would be 35/100. if the number is .75, then the rational answer would be 75/100 ...
November 16, 2006

mathhow can you tell which form of a ational number is most appropriate in a given situation?
November 16, 2006

Social StudiesAre their fish in the Mediterranean regions. What kinds of plants are there? The Mediterranean is a sea -- so of course, live there. Please clarify whether you're looking for native plants around the Mediterranean Sea -- or native plants in Mediterranean climates. We'...
November 15, 2006

GeographyI have to do a report on the Mediterranean. 20 people are going to be dropped there. They have to make their own homes with local materials. Please help me research on this. this report is due tom.! Use rocks and mud or burrow in hillsides. They are everywhere. Many lumber ...
November 15, 2006

Social StudiesI am looking for somewhere that would have all the wars in order that has happened involving American for 1754-2006. Can anyone help? http://www.historycentral.com/wars.html
October 19, 2006

law and societywhat r the laws and punishment for each laws in Japan ? If you want to knoow about Japanese laws, this is a very broad subject. It might be helpful if you indicated which laws or areas of laws interested you. Since this is not my area of expertise, I searched Google under the ...
September 27, 2006

Social studiesWho are allies/enemies of Panama? please tell me! I need to know. i've looked everywhere to find this info but failed. I posted the same question here before but it didn't really help. If you know, please just give me the country names. I have been trying to look up ...
September 21, 2006

math questionAbout how many books will fit on a shelf that is 40 inches long if each book is 2/3 inches wide? 40 divided by 2/3 inches per book = ? You need to divide 40 by 2/3. Your answer will be between 50 and 70 books.
September 17, 2006

Social StudiesWhat are allies/enemies of Panama? don't tell me to go to wikipedia or background notes or anything like that. i`ve tried everything but couldn't find the allies and enemies of Panama, although it seems like a really easy question! PLEASE HELP! thank you <3 Have you...
September 17, 2006

Social StudiesI have to assume that i am a realist, meaning i believe in the realism theory and that all states' actions are motivated by realism and realism only. Now, i have to come up with three examples why i believe this. I should be able to pursuade others that i'm right. WHAT...
September 10, 2006

Math_______ and _______ are commutative. What are the two basic math operations where the arguments commute? Think arithmetic.
August 27, 2006